linux-kernel - Re: [PATCH] dma-fence: Fix safe access wrapper to call timeline name method

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Message-ID: <d9c16e9e-8321-41fe-9112-e754445d8bb0@ursulin.net>
Date: Tue, 21 Oct 2025 19:36:44 +0100
From: Tvrtko Ursulin <tursulin@...ulin.net>
To: Akash Goel <akash.goel@....com>, sumit.semwal@...aro.org,
 gustavo@...ovan.org, christian.koenig@....com
Cc: linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 linaro-mm-sig@...ts.linaro.org, linux-kernel@...r.kernel.org, nd@....com,
 stable@...r.kernel.org
Subject: Re: [PATCH] dma-fence: Fix safe access wrapper to call timeline name
 method


On 21/10/2025 17:09, Akash Goel wrote:
> This commit fixes the wrapper function dma_fence_timeline_name(), that
> was added for safe access, to actually call the timeline name method of
> dma_fence_ops.
> 
> Cc: <stable@...r.kernel.org> # v6.17+
> Signed-off-by: Akash Goel <akash.goel@....com>

Fixes: 506aa8b02a8d ("dma-fence: Add safe access helpers and document 
the rules")

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@...lia.com>

Apologies for the copy and paste snafu.

Regards,

Tvrtko

> ---
>   drivers/dma-buf/dma-fence.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c
> index 3f78c56b58dc..39e6f93dc310 100644
> --- a/drivers/dma-buf/dma-fence.c
> +++ b/drivers/dma-buf/dma-fence.c
> @@ -1141,7 +1141,7 @@ const char __rcu *dma_fence_timeline_name(struct dma_fence *fence)
>   			 "RCU protection is required for safe access to returned string");
>   
>   	if (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags))
> -		return fence->ops->get_driver_name(fence);
> +		return fence->ops->get_timeline_name(fence);
>   	else
>   		return "signaled-timeline";
>   }